ISN Audio EST50

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ISN Audio EST50 Flagship 2 EST + 2 BA+ 1 Dynamic Driver Hybrid 2Pin 0.78mm HiFi Audiophile IEMS

Specification

Brand:ISN Audio

Model: EST50

2 Sonion Electrostatic driver for ultra-high frequency

1BA Knowles for high frequency

1BA Sonion for middle frequency

10mm dynamic for bass

Rated input power: 2mW

Max input power: 3mW

Impedance: 18ohm±10%(@1kHz)

Sensitivity: 100±3dB(@1kHz)

Frequency response: 15Hz-70kHz

Connector: 2Pin 0.78mm

Plug: 3.5mm audio , 2.5mm balanced , 4.4mm balanced

Cable length: 1.2M

Package

ISN EST50 earphone

Due to the impact of the COVID-19 pandemic, global international shipping will delays. The delay at our Hong Kong post office is very serious, so we have changed to other fastest or most efficient international shipping. Now the normal estimated delivery time may be delayed by about 1-2 weeks. In some countries where is higher free-tax rate, we will provide free courier service as much as possible.

Free Shipping

All listed items will be shipped though Registered Airmail with tracking number if there is no extra shipping method option listed or shipping description in the product page.

Economy shipping: Will be shipped without tracking number.

Registered Airmail : Will be shipped via such as Hong Kong post , Deutsche Post , Netherlands Post , Singapore Post, you can leave us a message if you have any requirement about the shipping method .

It will be shipped via Hong Kong Post by default, Europe countries can choose to be shipped via Deutsche Post or Netherlands Post, it is also FREE, pls leave us a message if needed.

Express service: Will be shipped via DHL/EMS/UPS/FedEx